From 3052a6f0325d4ff8366f43e997ce43448e811f41 Mon Sep 17 00:00:00 2001
From: Marcin Kurczewski <mkurczew@gmail.com>
Date: Sun, 20 Oct 2013 12:14:44 +0200
Subject: [PATCH] Disallowed . and .. as tag

---
 src/Models/Model_Tag.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Models/Model_Tag.php b/src/Models/Model_Tag.php
index 3d1a609f..1cf64662 100644
--- a/src/Models/Model_Tag.php
+++ b/src/Models/Model_Tag.php
@@ -40,6 +40,9 @@ class Model_Tag extends RedBean_SimpleModel
 		if (!preg_match('/^[a-zA-Z0-9_.-]+$/i', $tag))
 			throw new SimpleException('Invalid tag "' . $tag . '"');
 
+		if (preg_match('/^\.\.?$/', $tag))
+			throw new SimpleException('Invalid tag "' . $tag . '"');
+
 		return $tag;
 	}